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  • 型号: UC2845AQD8
  • 制造商: Texas Instruments
  • 库位|库存: xxxx|xxxx
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UC2845AQD8产品简介:

ICGOO电子元器件商城为您提供UC2845AQD8由Texas Instruments设计生产,在icgoo商城现货销售,并且可以通过原厂、代理商等渠道进行代购。 UC2845AQD8价格参考。Texas InstrumentsUC2845AQD8封装/规格:PMIC - 稳压器 - DC DC 切换控制器, 升压,反激,正激转换器 稳压器 正,可提供隔离 输出 升压,升压/降压 DC-DC 控制器 IC 8-SOIC。您可以下载UC2845AQD8参考资料、Datasheet数据手册功能说明书,资料中有UC2845AQD8 详细功能的应用电路图电压和使用方法及教程。

产品参数 图文手册 常见问题
参数 数值
产品目录

集成电路 (IC)半导体

Cuk

描述

IC CURR MODE PWM CONTROLLR 8SOIC开关控制器 Auto Cat Crrnt-Mode

产品分类

PMIC - 稳压器 - DC DC 切换控制器

品牌

Texas Instruments

产品手册

点击此处下载产品Datasheet

产品图片

rohs

符合RoHS无铅 / 符合限制有害物质指令(RoHS)规范要求

产品系列

电源管理 IC,开关控制器 ,Texas Instruments UC2845AQD8-

数据手册

点击此处下载产品Datasheet

产品型号

UC2845AQD8

PCN组件/产地

点击此处下载产品Datasheet

PWM类型

电流模式

上升时间

50 ns

下降时间

50 ns

产品种类

开关控制器

倍增器

其它名称

296-15203-5

分频器

包装

管件

升压

单位重量

75.600 mg

占空比

50%

占空比-最大

50 %

反向

反激式

商标

Texas Instruments

安装风格

SMD/SMT

封装

Tube

封装/外壳

8-SOIC(0.154",3.90mm 宽)

封装/箱体

SOIC-8

工作温度

-40°C ~ 125°C

工厂包装数量

75

开关频率

500 kHz

拓扑结构

Boost

最大工作温度

+ 125 C

最小工作温度

- 40 C

标准包装

75

电压-电源

7.6 V ~ 30 V

类型

Current Mode PWM Controllers

系列

UC2845AQ

输出数

1

输出电流

1000 mA

输出端数量

1 Output

降压

隔离式

频率-最大值

500kHz

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PDF Datasheet 数据手册内容提取

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 (cid:1) Extended Temperature Performance of D 8-PIN PACKAGE –40°C to 125°C (TOP VIEW) (cid:1) Optimized for Off-line and DC to DC Converters COMP 1 8 VREF (cid:1) Low Start Up Current (<0.5 mA) VFB 2 7 VCC (cid:1) ISENSE 3 6 OUTPUT Trimmed Oscillator Discharge Current RT/CT 4 5 GND (cid:1) Automatic Feed Forward Compensation (cid:1) Pulse-by-Pulse Current Limiting D 14-PIN PACKAGE (cid:1) Enhanced Load Response Characteristics (TOP VIEW) (cid:1) Under-Voltage Lockout With Hysteresis (cid:1) COMP 1 14 VREF Double Pulse Suppression NC 2 13 NC (cid:1) High Current Totem Pole Output VFB 3 12 VCC (cid:1) Internally Trimmed Bandgap Reference NC 4 11 VC (cid:1) 500 kHz Operation ISENSE 5 10 OUTPUT (cid:1) NC 6 9 GND Low R Error Amp O RT/CT 7 8 PWR GND description The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During under voltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for V over CC 5 V. The difference between members of this family are shown in the table below. PART NUMBER UVLO ON UVLO OFF MAXIMUM DUTY CYCLE UC2842A 16 V 10 V <100% UC2843A 8.5 V 7.9 V <100% UC2844A 16 V 10 V <50% UC2845A 8.5 V 7.9 V <50% Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright  2003, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 ORDERING INFORMATION† ORDERABLE TOP-SIDE TA PACKAGE‡ PART NUMBER MARKING SOIC-8 – D8 Tape and reel UC2842AQD8R 2842AQ SOIC-8 – D8 Tube UC2842AQD8 2842AQ SOIC-14 – D Tape and reel UC2842AQDR 2842AQ SOIC-14 – D Tube UC2842AQD 2842AQ SOIC-8 – D8 Tape and reel UC2843AQD8R 2843AQ SOIC-8 – D8 Tube UC2843AQD8 2843AQ SOIC-14 – D Tape and reel UC2843AQDR 2843AQ SOIC-14 – D Tube UC2843AQD 2843AQ –4400°°CC ttoo 112255°°CC SOIC-8 – D8 Tape and reel UC2844AQD8R 2844AQ SOIC-8 – D8 Tube UC2844AQD8 2844AQ SOIC-14 – D Tape and reel UC2844AQDR 2844AQ SOIC-14 – D Tube UC2844AQD 2844AQ SOIC-8 – D8 Tape and reel UC2845AQD8R 2845AQ SOIC-8 – D8 Tube UC2845AQD8 2845AQ SOIC-14 – D Tape and reel UC2845AQDR 2845AQ SOIC-14 – D Tube UC2845AQD 2845AQ †Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. block diagram NOTES: 1. A = DIL-8 Pin Number. B = SO-14 Pin Number. 2. Toggle flip flop used only in 2844A and 2845A. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 Ordering Information UC 284 4 A Q D R TAPE and REEL INDICATOR PACKAGE D = Plastic SOIC, 14 pin D8= Plastic SOIC, 8 pin AUTOMOTIVE TEMPERATURE RANGE INDICATOR IMPROVED PERFORMANCE INDICATOR PRODUCT OPTION 2 through 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†‡ V voltage (low impedance source) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V CC V voltage (I mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . self limiting CC CC Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1 A Output energy (capacitive load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 µJ Analog Inputs (pins 3, 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6.3 V Error Amp Output Sink current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Power Dissipation at T < +25(cid:2)C (D package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W A Package thermal impedance, θ (see Note 1): D (8-pin) package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W JA Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65(cid:2)C to 150(cid:2)C stg Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . 260(cid:2)C †Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. ‡Unless otherwise indicated, voltages are reference to ground and currents are positive into and negative out of the specified terminals. NOTE 1: Long term high–temperature storage and/or extended use at maximum recommended operating conditions may result in a reduction of overall device life. See http://www.ti.com/ep_quality for additional information on enhanced plastic packaging. electrical characteristics, T = –40(cid:2)C to 125(cid:2)C, V = 15 V (see Note 1), R = 10 kΩ, C = 3.3 nF, and A CC T T TA = TJ (unless otherwise stated) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Reference Section Output voltage TJ = 25(cid:2)C, IO = 1 mA 4.95 5.0 5.05 V Line regulation voltage VIN = 12 V to 25 V 6 20 mV Load regulation voltage IO = 1 mA to 20 mA 6 25 mV Temperature stability See Notes 2 and 3 0.2 0.4 mV/(cid:2)C Total output variation voltage Line, Load, Temp. 4.9 5.1 V f = 10 Hz to 10 kHz, Output noise voltage See Note 2 TJ = 25(cid:2)C 50 µV Long term stability 1000 hours, See Note 2 TA = 125(cid:2)C 5 25 mV Output short-circuit current –30 –100 –180 mA Oscillator Section Initial accuracy See Note 4 TJ = 25(cid:2)C 47 52 57 kHz Voltage stability VCC = 12 V to 25 V 0.2 1 % Temperature stability TA = MIN to MAX, See Note 2 5 % Amplitude peak-to-peak V pin 7, See Note 2 1.7 V TJ = 25(cid:2)C 7.8 8.3 8.8 DDiisscchhaarrggee ccuurrrreenntt VV ppiinn 77 = 22 VV, SSeeee NNoottee 55 mmAA TJ = Full range 7.5 8.8 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 electrical characteristics, T = –40(cid:2)C to 125(cid:2)C, V = 15 V (see Note 1), R = 10 kΩ, C = 3.3 nF, and A CC T T TA = TJ (unless otherwise stated) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Error Amplifier Section Input voltage COMP = 2.5 V 2.45 2.5 2.55 V Input bias current –0.3 –1 µA Open loop voltage gain (AVOL) VO = 2 V to 4 V 65 90 dB Unity gain bandwidth See Note 2 TJ = 25(cid:2)C 0.7 1 MHz PSRR VCC = 12 V to 25 V 60 70 dB Output sink current FB = 2.7 V, COMP = 1.1 V 2 6 mA Output source current FB = 2.3 V, COMP = 5 V –0.5 –0.8 mA VOUT high FB = 2.3 V, RL = 15 kΩ to GND 5 6 V VOUT low FB = 2.7 V, RL = 15 kΩ to VREF 0.7 1.1 V Current Sense Section Gain See Notes 6 and 7 2.85 3 3.15 V/V Maximum input signal COMP = 5 V, See Note 6 0.9 1 1.1 V PSRR VCC = 12 V to 25 V,See Note 6 70 dB Input bias current –2 –10 µA Delay to output ISENSE = 0 V to 2 V, See Note 2 150 300 ns Output Section (OUT) IOUT = 20 mA 0.1 0.4 LLooww-lleevveell oouuttppuutt vvoollttaaggee VV IOUT = 200 mA 15 2.2 IOUT = –20 mA 13 13.5 HHiigghh-lleevveell oouuttppuutt vvoollttaaggee VV IOUT = –200 mA 12 13.5 Rise time CL = 1 nF, See Note 2 TJ = 25(cid:2)C 50 150 ns Fall time CL = 1 nF, See Note 2 TJ = 25(cid:2)C 50 150 ns UVLO saturation VCC = 5 V, IOUT = 10 mA 0.7 1.2 V Undervoltage Lockout Section UC2842A, 15 16 17 UC2844A SSttaarrtt tthhrreesshhoolldd VV UC2843A, 7.8 8.4 9 UC2845A UC2842A, 9 10 11 UC2844A MMiinniimmuumm ooppeerraattiioonn vvoollttaaggee aafftteerr ttuurrnn oonn VV UC2843A, 7 7.6 8.2 UC2845A POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 electrical characteristics, T = –40(cid:2)C to 125(cid:2)C, V = 15 V (see Note 1), R = 10 kΩ, C = 3.3 nF, and A CC T T TA = TJ (unless otherwise stated) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS PWM Section UC2842A, UC2843A 94 96 100 MMaaxxiimmuumm dduuttyy ccyyccllee %% UC2844A, UC2845A 47 48 50 Minimum duty cycle 0 % Total Standby Current Start-up current 0.3 0.5 mA Operating supply current FB = 0 V, SENSE = 0 V 11 17 mA VCC internal zener voltage ICC = 25 mA 30 34 V NOTES: 1. Adjust VCC above the start threshold before setting at 15 V. 2. Not production tested. 3. Temperature stability, sometimes referred to as average temperature coefficient, is described by the equation: VREF (max) – VREF (min) . VREF (max) and VREF (min) are the maximum and minimum reference voltage measured Temp Stability = TJ (max) – TJ (min) over the appropriate temperature range. Note that the extremes in voltage do not necessarily occur at the extremes in temperature. 4. Output frequency equals oscillator frequency for the UC2842A and UC2843A. Output frequency is one half oscillator frequency for the UC2844A and UC2845A. 5. This parameter is measured with RT = 10 kΩ to VREF. This contributes approximately 300 µA of current to the measurement. The total current flowing into the RT/C pin will be approximately 300 µA higher than the measured value. 6. Parameter measured at trip point of latch with VFB at 0 V. 7. Gain is defined by: (cid:1)VCOMP; 0 (cid:1) VSENSE (cid:1) 0.8 V. A = (cid:1)VSENSE PA RAMETER MEASUREMENT INFORMATION Error Amp can source and sink up to 0.5 mA, and sink up to 2 mA. Figure 1. Error Amp Configuration 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 PARAMETER MEASUREMENT INFORMATION During UVLO, the Output is low. Figure 2. Under Voltage Lockout Peak Current (Is) is Determined By The Formula: Ismax(cid:2)1.0V RS A small RC filter may be required to supress switch transients. Figure 3. Current Sense Circuit POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 PARAMETER MEASUREMENT INFORMATION Output Saturation Characteristics Error Amplifier Open-Loop Frequency Response Figure 4 Figure 5 AP PLICATION INFORMATION Oscillator Frequency vs Timing Resistance Maximum Duty Cycle vs Timing Resistor Figure 6. Oscillator 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 APPLICATION INFORMATION High peak currents associated with capacitive loads necessitate careful grounding techniques. Timing and bypass capacitors should be connected close to pin 5 in a single point ground. The transistor and 5k potentiometer are used to sample the oscillator waveform and apply an adjustable ramp to pin 3. Figure 7. Open-Loop Laboratory Text Fixture A fraction of the oscillator ramp can be resistively summed with the current sense signal to provide slope compensation for converters requiring duty cycles over 50%. Note that capacitor, C, forms a filter with R2 to suppress the leading edge switch spikes. Figure 8. Slope Complression POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER SGLS164 – APRIL 2003 APPLICATION INFORMATION Power Supply Specifications 1. Input Voltage 95VAC to 130VAC (50Hz/60Hz) 2. Line Isolation 3750V 3. Switching Frequency 40 kHz 4. Efficiency, Full Load 70% 5. Output Voltage: A. +5V, ±5%; 1A to 4A Load B. +12V, ±3%; 0.1A to 0.3A Load Ripple voltage: 100 mV P-P Max C.–12V, ±3%; 0.1A to 0.3A Load Ripple voltage: 100 mV P-P Max Figure 9. Off-Line Flyback Regulator 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) UC2842AQD8 ACTIVE SOIC D 8 75 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2842AQ, UC2842AQ) & no Sb/Br) UC2842AQD8R ACTIVE SOIC D 8 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2842AQ, UC2842AQ) & no Sb/Br) UC2842AQDR ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2842AQ, UC2842AQ) & no Sb/Br) UC2843AQD8 ACTIVE SOIC D 8 75 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2843AQ, UC2843AQ) & no Sb/Br) UC2843AQD8R ACTIVE SOIC D 8 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2843AQ, UC2843AQ) & no Sb/Br) UC2843AQDR ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2843AQ, UC2843AQ) & no Sb/Br) UC2845AQD8 ACTIVE SOIC D 8 75 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2845AQ, UC2845AQ) & no Sb/Br) UC2845AQD8R ACTIVE SOIC D 8 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2845AQ, UC2845AQ) & no Sb/Br) UC2845AQDR ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (2845AQ, UC2845AQ) & no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 31-May-2019 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) UC2842AQD8R SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 UC2842AQDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 UC2843AQD8R SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 UC2843AQDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 UC2845AQD8R SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 UC2845AQDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 31-May-2019 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) UC2842AQD8R SOIC D 8 2500 367.0 367.0 35.0 UC2842AQDR SOIC D 14 2500 367.0 367.0 38.0 UC2843AQD8R SOIC D 8 2500 367.0 367.0 35.0 UC2843AQDR SOIC D 14 2500 367.0 367.0 38.0 UC2845AQD8R SOIC D 8 2500 367.0 367.0 35.0 UC2845AQDR SOIC D 14 2500 367.0 367.0 38.0 PackMaterials-Page2

None

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PACKAGE OUTLINE D0008A SOIC - 1.75 mm max height SCALE 2.800 SMALL OUTLINE INTEGRATED CIRCUIT C SEATING PLANE .228-.244 TYP [5.80-6.19] .004 [0.1] C A PIN 1 ID AREA 6X .050 [1.27] 8 1 2X .189-.197 [4.81-5.00] .150 NOTE 3 [3.81] 4X (0 -15 ) 4 5 8X .012-.020 B .150-.157 [0.31-0.51] .069 MAX [3.81-3.98] .010 [0.25] C A B [1.75] NOTE 4 .005-.010 TYP [0.13-0.25] 4X (0 -15 ) SEE DETAIL A .010 [0.25] .004-.010 0 - 8 [0.11-0.25] .016-.050 [0.41-1.27] DETAIL A (.041) TYPICAL [1.04] 4214825/C 02/2019 NOTES: 1. Linear dimensions are in inches [millimeters]. Dimensions in parenthesis are for reference only. Controlling dimensions are in inches. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed .006 [0.15] per side. 4. This dimension does not include interlead flash. 5. Reference JEDEC registration MS-012, variation AA. www.ti.com

EXAMPLE BOARD LAYOUT D0008A SOIC - 1.75 mm max height SMALL OUTLINE INTEGRATED CIRCUIT 8X (.061 ) [1.55] SYMM SEE DETAILS 1 8 8X (.024) [0.6] SYMM (R.002 ) TYP [0.05] 5 4 6X (.050 ) [1.27] (.213) [5.4] LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE:8X SOLDER MASK SOLDER MASK METAL OPENING OPENING METAL UNDER SOLDER MASK EXPOSED METAL EXPOSED METAL .0028 MAX .0028 MIN [0.07] [0.07] ALL AROUND ALL AROUND NON SOLDER MASK SOLDER MASK DEFINED DEFINED SOLDER MASK DETAILS 4214825/C 02/2019 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN D0008A SOIC - 1.75 mm max height SMALL OUTLINE INTEGRATED CIRCUIT 8X (.061 ) [1.55] SYMM 1 8 8X (.024) [0.6] SYMM (R.002 ) TYP [0.05] 5 4 6X (.050 ) [1.27] (.213) [5.4] SOLDER PASTE EXAMPLE BASED ON .005 INCH [0.125 MM] THICK STENCIL SCALE:8X 4214825/C 02/2019 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com

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